Results 21 to 30 of about 2,450 (178)
Crystals, 2020 In the past two decades, acoustic metamaterials have garnered much attention owing to their unique functional characteristics, which are difficult to find in naturally available materials. The acoustic metamaterials have demonstrated excellent acoustical
Sanjay Kumar, Heow Pueh Lee
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Crystals, 2023 Manipulating radiation patterns is challenging, especially at low frequencies. In this paper, we demonstrate that acoustic metamaterials arranged as an array of quadrupoles remarkably improve the directionality of acoustic radiation at low frequencies ...
Qinglei Zeng +3 more
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Physics Today, 2016 By incorporating novel subwavelength structures into macroscopic materials, acousticians can create devices with exotic sound-altering properties.
Michael R. Haberman, Matthew D. Guild
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Research progress and development trend of smart metamaterials
Frontiers in Physics, 2022 The development of smart metamaterials has brought changes to human society, and various new products based on smart metamaterials are emerging endlessly.
Yongju Zheng +8 more
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Archives of Acoustics, 2021 The problem of reducing noise in transportation is an important research field to prevent accidents and to provide a civilised environment for people. A material that has recently attracted attention in research to reduce noise is acoustic metamaterial ...
Myong Chol PAK +3 more
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A Review of Acoustic Metamaterials and Phononic Crystals
Crystals, 2020 As a new kind of artificial material developed in recent decades, metamaterials exhibit novel performance and the promising application potentials in the field of practical engineering compared with the natural materials.
Junyi Liu, Hanbei Guo, Ting Wang
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Sustainable Solutions in Sound Shielding: Harnessing Metamaterials for Acoustic Cloaking [PDF]
E3S Web of ConferencesThe development of metamaterials promises to enable smallscale, worldwide industry-wide acoustic, electromagnetic, mechanical, and solar energy harvesting.
Singh Thapa Devendra +6 more
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Crystals, 2022 We propose the design method for broadband acoustic metamaterials based on the concept of transformation acoustics. Two-dimensional distributed transmission-line (TL) models for full-tensor anisotropic electromagnetic metamaterials are applied to full ...
Tsutomu Nagayama +3 more
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Double-negative acoustic metamaterial [PDF]
Physical Review E, 2004 We show here the existence of acoustic metamaterial, in which both the effective density and bulk modulus are simultaneously negative, in the true and strict sense of an effective medium. Our double-negative acoustic system is an acoustic analogue of Veselago's medium in electromagnetism, and shares many unique consequences, such as negative refractive
Li, Jensen Tsan Hang, Chan, Che Ting
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Predicting double negativity using transmitted phase in space coiling metamaterials [PDF]
Royal Society Open Science, 2018 Metamaterials are engineered materials that offer the flexibility to manipulate the incident waves leading to exotic applications such as cloaking, extraordinary transmission, sub-wavelength imaging and negative refraction.
Santosh K. Maurya +3 more
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